| 摘要 |
FIELD: electrical engineering; electrical connections to supply power to submersible pump motor for extracting stratum liquid. ^ SUBSTANCE: proposed cable extension-cord box of submersible motor cable line that suffers in operation high hydrostatic pressure and temperature has box proper accommodating cable fixed in position by means of fastening member; cable has conductors and terminal block provided with holes to receive cable lugs and conductors connected to them; at least one of joints between cable conductors and lugs is disposed in terminal block hole at distance L >= 0.5 d, where d is cable conductor diameter, from butt-end surface of block disposed closer to supporting member additionally installed in cable box and provided with holes to receive cable conductors. ^ EFFECT: enhanced reliability and service life, enlarged functional capabilities of device. ^ 20 cl, 8 dwg, 1 tbl |
